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7600494 |
Operation of electrically actuated valves at lower temperatures
A system and method for controlling electromechanical valves operating in an engine is presented. According to the method, valve operation can be improved by heating the valves, at least during...
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7559311 |
Solenoid operated valve device designed to ensure high responsiveness of valve action
A solenoid-operated valve device is provided which includes a valve, a solenoid actuator designed to be supplied with electric power from a battery to operate on voltage substantially identical...
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7558043 |
Amperage control for valves
An amperage control for an electrically operated valve having a coil. A process control apparatus generates a plurality of electrical operating data signals, each signal corresponding to an...
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7546830 |
Injector drive device and injector drive system
An injector drive device includes a power supply unit that is supplied with power from a battery mounted in a vehicle and generates a voltage higher than the voltage of the battery, and EDU having...
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7509931 |
Power electronics circuit for electromechanical valve actuator of an internal combustion engine
A dual coil half bridge converter adapted to be coupled to a dual coil actuator of a cylinder valve in an internal combustion engine is described. In one example, the converter has a first and...
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7508645 |
Method and apparatus for operating a magnetic actuator in a power switching device
A method and apparatus for operating a magnetic actuator in a power switching device by transmitting at least two different electrical current waveforms to the actuator. Both waveforms are sent to...
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7497206 |
Method for operating an internal combustion engine
With a method for operating an internal combustion engine with a fuel injector ( 18 ) that is opened and closed electrically, a booster capacitor (BK) serving to increase the current intensity when...
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7446541 |
Solenoid test device
A solenoid test device includes a clock circuit, a control circuit, and an output port configured for coupling to two ends of a solenoid. The clock circuit generates a clock signal and sends it to...
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7423857 |
Current detecting circuit and actuator driving apparatus
By switching the NMOS ( 11 ) on and off, a drive current passes through a solenoid ( 15 ). The drive current passes through a conversion circuit ( 16 ), and an amplifier circuit ( 17 ) outputs a...
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7405918 |
Inductive load control
A method is provide for controlling an inductive load device (ILD). The method includes providing a voltage potential across ILD and disabling a flow of current through the ILD resulting from the...
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7403366 |
Control circuit for an electromagnetic drive
A control circuit for an electromagnetic drive includes first and second electronic switching elements, which in conjunction with a timing element subject the drive coil to a corresponding direct...
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7369391 |
Drive circuit of direct-current voltage-driven magnetic contactor and power converter
In a direct-current voltage-driven magnetic contactor, a main contact is in an open circuit condition in an attraction period of an initial period of excitation by an operating coil, and in a...
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7359175 |
Relay drive circuit
A potential of an end of the coil is inputted to a plate-OFF detecting portion which detects OFF-tendency in which a plate of a relay is about to get apart from a head of a core of the relay. When...
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7349193 |
Solenoid driver with high-voltage boost and reverse current capability
Prior to the operation of a solenoid type of fuel injector, a DC voltage is applied across the injector to create a current through the injector that is below the activation current of the...
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7349192 |
Method of operating a device for controlling electric actuators with optimum actuation current distribution
There is described a method of operating a device ( 1 ) controlling electric actuators ( 3 ), and having a pair of input terminals ( 4, 5 ) connected to an electric energy source ( 6, 10 ); a...
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7336470 |
Solenoid drive apparatus and drive method
A solenoid ( 30 ) has one end connected to the ground G and the other end connected to an N-MOS transistor ( 33 ) which applies current from a battery ( 31 ) to the solenoid ( 30 ). On the other...
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7318420 |
Control apparatus for internal combustion engine
A drive control circuit supplies power to a solenoid coil in an in-cylinder injector of a cylinder in response to a fuel injection signal. A failure detection circuit to detect disconnection...
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7315440 |
Circuit and method for driving a coil-armature device
Methods and circuits for driving a coil-armature device are disclosed. The circuits are configured to drive the coil-armature device to a first energy level for a period of time sufficient to...
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7307397 |
Driving unit
A driving unit of the present invention comprises a moving element, an elastic body configured to support the moving element, a permanent magnet fixed on said moving element, an electromagnet...
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7271993 |
Control of current in an inductance with pulse width modulation at control frequency
A PWM controller for a bridge driver circuit for controlling current in an inductive load such as a motor, can set the driver into a forward mode, a slow decay mode or a fast decay mode, and can...
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7262950 |
Relay device having holding current stabilizing and limiting circuit
A relay device includes plural relay units, each having a coil for opening/closing a contact point, a base plate made of resin and having wiring metal pieces, and a control circuit mounted on the...
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7248453 |
Circuit and method for controlling current flow through a solenoid
A solenoid control circuit that includes two switching networks that are selectively opened and closed in a current limit cycle to control the magnitude of the current flowing through the solenoid....
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7245474 |
Circuit arrangement and method for controlling a bistable magnetic valve
A circuit arrangement and also a method for controlling a bistable magnetic valve in which a magnetic valve is to be supplied with a pulse of electrical current in order to switch over the magnetic...
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7235962 |
Inductor-based current sensing
A circuit for sensing a current in an inductor is described. Integrator circuitry is operable to generate a first signal representing an integration of a voltage across the inductor. Comparison...
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7235936 |
Linear vibration motor
A linear vibration motor comprises: a stator provided with one of a permanent magnet and an electromagnet including a winding; a vibrator provided with the other of the permanent magnet and the...
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7234439 |
Fuel injection system executing overlap injection operation
A control device executes an overlap injection operation, in which one of the plurality of injectors is energized first to inject fuel, and a next one of the plurality of injectors is energized to...
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7191765 |
Device for control of electro-actuators with detection of the instant of end of actuation, and method for detection of the instant of end of actuation of an electro-actuator
A description is provided of a device ( 2 ) for control of an electro-actuator ( 3 ), comprising a first and a second input terminal ( 4,5 ) which are connected to an electrical energy source ( 6...
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7161787 |
Low power solenoid driver circuit
The present invention provides a system and method for controlling a solenoid that ensures accurate timing between the enabling of the driving circuit and the activation of the solenoid, while...
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7158361 |
Method and apparatus for regulating a current through an inductive load
The invention relates to a method and an apparatus for regulating a current through an inductive load, which can be connected to a power supply, to a prescribed nominal current value, where the...
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7158360 |
Solenoid drive circuit
A solenoid drive circuit includes a control circuit which comprises a detector with a resistor for discerning current flow therethrough to produce electric signals that correspond to level of...
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7131429 |
Method for controlling an injection valve of an internal combustion engine
A method for controlling an injection valve of an internal combustion engine, in particular a piezo-injector during the start-up phase of the internal combustion engine, in particular a common-rail...
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7126805 |
Solenoid driving device
A device for driving a solenoid including a power supply, a switching element connected between the power supply and the solenoid in series therewith, a current circulating diode connected in...
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7113385 |
Method of controlling magnetic flux of electromagnet, and electromagnet implementing the same
For controlling a magnetic flux of an electromagnet with a relay pulling characteristic and at least two stabile levels of values of a magnetic flux in a magnetic guide, controlling pulses of...
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7109602 |
Contactless power supply system and branch box used therefor
An arrangement comprising a magnetic body ( 12 ) having a hole portion ( 11 ) for passage of a primary-side first induction line ( 2 ), a primary-side second induction line ( 5 ) for electrically...
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7100578 |
Method for driving fuel injection pump
The present invention achieves an increase in the amount of vapor that is expelled, stabilized fuel injection and improved starting characteristics in a fuel injection pump. In an...
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7013876 |
Fuel injector control system
A control system for a fuel injector is disclosed. The control system has a valve element movable between a first position and a second position, an armature connected to the valve element, a...
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6985345 |
Method and a device for operating an electro-magnet on an intrinsically safe direct current circuit
The present invention relates to a method for operation of an electro-magnet ( 2, 3 ) connected to an intrinsically safe direct current circuit which can be switched under control between two...
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6981489 |
Method for controlling a fuel injector according to a control law which is differentiated as a function of injection time
A method for controlling a fuel injector provided with an electrically operated electomagnetic actuator in such a manner as to open the injector for a determined injection time; the method...
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6978978 |
PWM voltage clamp for driver circuit of an electric fluid dispensing gun and method
An electric fluid dispenser for dispensing a fluid onto a substrate. A power switching circuit is connected to an unregulated power supply providing a varying voltage. A solenoid connected to the...
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6934140 |
Frequency-controlled load driver for an electromechanical system
A frequency-controlled load driver circuit includes a steady-state and a transient operational mode. A switching driver switches a load current to a solenoid at a set switching frequency during a...
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6930873 |
Micro electromechanical switches
Characteristics of micro electromechanical switches can be changed by applying a control signal which either changes one or more parameters of the micro electromechanical switches or which controls...
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6891710 |
Method for control of a proportional magnet with a hold function
Method for control of a proportional magnet comprising a magnet core, a magnet armature, a magnet coil for operating a control element in a shift valve or a proportional pressure-control valve,...
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6879480 |
Brake transmission shift interlock and park lock system
A Brake Transmission Shift Interlock and Park Lock System having a shift lever, electromagnetic device, and blocking member operating with reverse logic. The system includes disabling means for...
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6845300 |
Control methods for electromagnetic valve actuators
An electromagnetically operated valve assembly ( 28 ) has a first solenoid ( 58 ) and a second solenoid ( 60 ). An armature ( 56 ) having a valve stem ( 54 ) coupled thereto is positioned between...
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6845001 |
Electromagnetic contactor
In an electromagnetic contactor 100 for passing a current through an electromagnet 301 from a power source 402 and moving a movable core 1 from a first position in which a gap to a fixed...
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6798634 |
Device for actuating an electromagnet
A device with a safety circuit with an armature activated by a solenoid activates an electromagnet. The device has a switch connected in series to the solenoid, a device temporarily interrupting...
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6785112 |
Method and device for triggering a fuel injector
A method and device for triggering a solenoid valve for injecting fuel into an internal combustion engine is described. The triggering phase of the solenoid valve is subdivided into a pull-up phase...
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6771479 |
Method and device for controlling a selection device with solenoids for a weaving machine
Device for energizing a number of coils of a hook selection device for a weaving machine includes an electrical power supply source connected to the coils and a regulating device for regulating the...
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6757149 |
Method for controlling fuel injector valve solenoid current
A method of controlling a fuel injector valve solenoid includes generating a set-point signal which models a desired current profile flowing through the valve solenoid, providing a current...
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6744615 |
Device for controlling an electromechanical regulator
A device for controlling an electromechanical regulator, including a controller ( 3 a ) that controls the current through a coil ( 113 ) and which, for that purpose, generates control signals for a...
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